Fuel pellet.
An example of the element Uranium

Fuel pellet.
This is said to be a fuel pellet intended to be used in a "SLOWPOKE" style research reactor, which would mean it contains enriched uranium. I'm unclear on the legality of owning enriched uranium: If it's illegal, I'm sure this doesn't contain any, OK? I got this pellet by trading some custom-formed lead shielding blocks to a guy who was building a Farnsworth Fusor (a kind of tabletop fusion machine that actually works). Ah, such hobbies we have.Source:AnonymousContributor:AnonymousAcquired:10 August, 2004Text Updated:8 December, 2007Price: DonatedSize: 0.5"Purity: 50%